<!DOCTYPE html>
<style>
    body { -webkit-column-width: 50px; }
    tr { break-inside:avoid; }
</style>
crbug.com/634155: Don't crash when section has no header.
<table>
   <td><br></td>
</table>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();
</script>
